US2486011A

US2486011A - Valve

Info

Publication number: US2486011A
Application number: US666096A
Authority: US
Inventors: Frank J Eichelman
Original assignee: National Cylinder Gas Co
Current assignee: National Cylinder Gas Co
Priority date: 1946-04-30
Filing date: 1946-04-30
Publication date: 1949-10-25
Anticipated expiration: 1966-10-25

Description

Oct. 25, 1949. F. J. ElCHE ZLMAN VALVE Filed April 30, 1946 IT 2 M f a.

FLUID INLET INVENTOR fianli'lfiz'c'h l BY I am 710M M TTORNEY Patented Oct. 25, 1 949 umreosmres: one-lee;

Frank; J,., Eichelmanjijlf iark, Ill.-, ,assignor to,

National. .Cylindr,

Gas Company, ,Ch'icagoJIL;

a corporation of Delaware ApplicationiApril BM1946,:Serial:2N0;666:096r;

6iC1aimS..; (Cl. 287-53) This invention relates tocthat. typeof,- .va1.ve in which ,there. is provided a valve stemthreaded in: the valve casin for rotational andendwise -move-. ment, andcarrying at its innerend a valvev meme ber;movable-,axially' in respect to the seat inthev 5.. casing; It relates more rparticularlyto: the cone strnction of the valvejstem and an, operating, handwheel securedthereto to move endwise there: i with and locked against ;.relative rotation in re.-, spect thereto.

The main objectsbfthe invention. are. topro-,. videan efiective;lockingemeans: which may be made by simple machininggoperation, which may; be:v easily andquickly, assembledmry taken apart; 7

which. is concealed and; protected within the handwheel.

In carrying out .my' invention I, provide ahandewheel whichmay-be slipped'gonto the: I"1d)0f,-th.eIl

stem, and provide the handwheel and. the ,stems; with registering slots open.at.the1top;and,1111302 which the locking key maybe deposited. 'I'hereris; also provided a cap or top plate threaded into'tthei; stem above the handwheelito concealithelgslots and lockin-g4key to hold' thelocking; keylin: place, tohold the handwheel against axial. :movement 5. with-respect t0 the stem; and, in effect; forms-1a,... part of thehandwheel itself.

One embodiment of 'mytinventiondsillustrated; in the accompanying-drawings, in'which' Fig; l is a central longitudinalwsection'.throughz the valveembodying the: invention and} taker-1. axially of the valve stem; and" Fig. 2' is'a transverse section of the:=.1ine-:2t+-2:. Of Fi'g; 1.

As the-present invention does not-embody any.-' 35.,

novel features of the valve: casing =per- 'se, ,and as: the -valve-caslng-may be ofvarious types and forms, there is shown in the drawings only a portion of a valve casing, including a-=wal1 [0, in which :the valve hstem isgmounted, and ,a;wall J I having a port l2 to be control-led by the ;va1ve,- and presentingavalve seatfora valvemember I 3, which maybe of'the needle type-valve; or of any other suitable form adapted to, move axiallyto: ward and from .thevalve seat.

In the construction.illustratedthere is provided: a .Valve :stem l5.. having external jthreads-i I 6, en gaging corresponding .threadsina-bore orlpassa ec through the wall l0, and carrying a valve [3 held against endWise movement in respect thereto, and preferably free for relative rotation in respect thereto. As shown, the stem has a cylindrical chamber or recess I! at its inner end, and receiving a cylindrical end portion of the valve I3. The iner end of the stem preferably terminates in a thin,- aedgeonflange portion ;l 8 which. ma baspurr overdnto amannumngroove al 910111 the -;-valve,- l inseaasetog engage 5 a shoulder at the end of- -the.;;groovesandszholdqthegvalve -n1ember,- in ,the stem.*,;.,b.ut:pe 016 theerotation ofgtheqstem in {respect tethe valve member-. Other! types -.o-f valvea membersa mambe-nseclin place of that shown:

The,-wall: I 0 of the casing; has an,upsta.n in r, annular; flange 20.- around: the threaded bore; which receives: the-stem, and; this; is, externally; thfreadedto receiveagland, 2| enclosing; packing; 22.;around ,the val-vestem. The innerendionthee chamber: within the gland 21 is preferably bevw elled -;.or conical so; that. as .ythe gland, issc1 e\lved,,,I downton thetflange 20; the packingtis compressedg and; at the; same: timeefor ed inwardly,- again tt the .avalve stem; The packingzis preterably of ,the;-. split type.

The,,rotationnoflthevalvestem tolimpartsendwiseamovement J thereto, ,is efiected by .me an s of-tlf:

a handwheel 24 which is locked to the outeremlcz ofizthe-=valve stem, andipreferablyhas :anflange or skirt portion eZBJencircIing, the gland 2i; and-, ,pr.ee-

senting a comparatively :widerperipheral surfaeee, whereby the. handwheel-maybe ,effectivelygrippedt, to-rotateit;

As aneimportantfeatureof the invention; thee: stem.- l 5': is. providedzwith a shoulder l 26;, upon-r; whi'ch:.the.handwheel .sits,-. and the outer: entlii portion beyondsaid shoulderis threaded .anckproavided. with the transverse .slot 21 extending-.- in; fromthe end toapproximately. the. plane-bf saidi shoulders The handwheel has; a hole theme through so that it may. be .slippedzonto the endil. of the stem and seat'on'said shoulder, and also;- has a pair ofrecesses' or slots .2822extendingwoutwardly; at diametrically: opposite-sides of; the holee and which may h e-aligned with- :the s10tt21 in. thea stem to receive akey memberzflfl; This keyamemr be? preferably flat than which; has i a lengths greater-than the diameter ofcth'e stem, Width ,ap proximately equal; to:;the;: thickness; of; the; top; transversewall 0f :the; handwheel andsuch thickeness; as;--to;substantially fit-the slots-21'; and-1.28;, With thBrSlQllOf-fih855t8lll and thetslots or.recesses,s of;-the -handivheel iinqalig-nedpositions, the keymember-is dropped.oreforced-into,ali nedslots so, as to positively lock the handwheeltagainstrrotae tion in respect to the stem.

The stem extends out to some distance beyond the outer surface of the handwheel, and a cap or plate 3|] having a threaded socket 3| is screwed onto the end of the stem to engage the handwheel and cover the slot 21. This cap or plate has a diameter greater than the length of the keyway 3 so that it completely covers and conceals the slot 28 and the key member 29.

Preferably the hole through the handwheel is not threaded so that it merely slips onto the stud, and whenever it is desired to remove the handwheel, as for instance to tighten the gland 2|, or to replace the packing 22, it is merely necessary to unscrew the cover plate or nut 30 and lift of! the handwheel. In some construction the handwheel may be threaded onto the stem and then locked by the key members so that the shoulder 26 is unnecessary.

If the valve member becomes worn or corroded and requires replacement, the handwheel, gland, packing and stem may be readily removed, the handwheel and stem taken apart, and a new valve stem and valve substituted. No tools are required other than a wrench for unscrewing the plate 30 and the gland 2|.

In some constructions it is not necessary that the slot 21 extend all of the way across the diameter of the stem 15. One of the slots 28 may be omitted and the key 29 and be dropped into the other slot 28 and a groove or kerf constituting one end portion of the slot 21. The cap or plate 30 may be in the form of an ordinary nut.

In valves of the general type here involved, the stem and handwheel are usually fastened together with a pin driven into a bolt which is drilled partly into the handwheel and partly into the stem. Once this pin is driven in, it is difficult if not almost impossible to remove it without damage to the handwheel. Thus, if the valve seat or other parts become worn, it is necessary to replace not only the stem but also the handwheel. In the present construction, it is possible to replace merely the stem, as the stem and handwheel may be easily taken apart.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent is:

1. In combination a rotatable stem having an axially facing shoulder and a transverse slot extending inwardly from one end approximately to the transverse plane of said shoulder, a handle member having an opening therethrough to receive the end of said stem and abut said shoulder, and said opening having a slot extending radially therefrom, a key member disposed in the aligned slots of said stem and said handle member to prevent relative rotational movement of said handle member and stem, and a cap threaded onto the outer end of said stem, concealing said slots and key member, and holding said handle member against said shoulder.

2. In combination a rotatable stem having a slot open at one end and along one side of said stem, a handle member having an opening therethrough to receive the end of said stem, said opening having a slot extending radially therefrom, a key member disposed in the aligned slots of said stem and said handle member to prevent relative rotational movement of said handle member and stem and readily removable through the end of said stem, and a cap threaded onto the outer end of said stem, concealing said slots and key member, and holding said handle member against said shoulder.

3. A valve having a rotatable stem having a transverse slot extending inwardly from the outer end thereof, a handle member having an opening therethrough to receive the outer end of said stem, and having a slot on the side of said opening to register with the slot in said stem, a removable key member disposed in the slot of said stem and extending into the slot of said handle member, and a cap on the outer end of said stem for holding said handle member in engagement with said shoulder, retaining said key member in place, and covering said key member, slots and the outer end of said stem.

4. A valve having a rotatable stem having an external shoulder spaced from and facing toward the outer end of said stem, and a transverse slot extending from the outer end of the stem to approximately the plane of said shoulder, a handle member having an opening therethrough and adapted to slip onto the outer end of said stem and seat on said shoulder, and having a slot on the side of said opening to register with the slot in said stem, a transversely extending key member disposed in the slot of said stem, extending 'into the slot of said handle member, and readily removable through the outer end of the stem, and a cap threaded onto the outer end of said stem for holding said handle member in engagement with said shoulder, covering said key member and slots, retaining said key member in place, and

covering the outer end of said stem.

5. In a valve, the combination of a rotatable stem having a transverse slot therethrough extending in from the outer end thereof, a handle member having an opening therethrough to receive the outer end of said stem, and having a recess on the side of said opening, a locking pin disposed in and freely removable from the slot of said stem and having an end disposed in said recess, and a nut threaded on the outer end of said stem for retaining said locking pin in position.

6. In a valve, the combination of a stem having a transverse slot therethrough extending in from the outer end thereof, a shoulder on the exterior substantially in the plane of the inner end of said slot, a handle member having an opening therethrough to receive the outer end of said stem, and seating on said last mentioned shoulder, and having recesses on opposite sides of said opening, a locking pin disposed in the slot of said stem and having its ends disposed in said recesses, and a nut on the outer end of said stem for holding said handle member on said seat, for covering the outer end of said stem, and for concealing and retaining said locking pin in position.

FRANK J. EICHELMAN.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,495,733 Gillen May 27, 1924 1,763,927 Ireland June 17, 1930 1,832,554 Holstein Nov. 17, 1931 2,233,962 Rover Mar. 4, 1941